added lazy plugin manager, catppuccin color scheme, lualine

lua/config/autocommands.lua

@@ -28,9 +28,30 @@
                 Neovim 0.12 configuration
                   (c) Frank Zechert 2026
 ]]
+local create_group = vim.api.nvim_create_augroup
+local create_cmd = vim.api.nvim_create_autocmd
+local function contains(tbl, value)
+	for _, v in ipairs(tbl) do
+		if v == value then
+			return true
+		end
+	end
+	return false
+end
+
+-- briefly highlithg text that is yanked
+create_cmd("TextYankPost", {
+	desc = "Highlight yanked text",
+	group = create_group("cmd-highlight-yank", { clear = true }),
+	callback = function()
+		vim.highlight.on_yank()
+	end,
+})
 
 -- recognize all scripts with bash shebang as bash filetype
-vim.api.nvim_create_autocmd({"BufRead", "BufNewFile"}, {
+create_cmd({"BufRead", "BufNewFile"}, {
+	desc = "Recognize bash shebang as bash filetype",
+	group = create_group("cmd-recognize-bash-filetype", { clear = true }),
 	pattern = "*",
 	callback = function(args)
 		local buf = args.buf
@@ -40,3 +61,27 @@ vim.api.nvim_create_autocmd({"BufRead", "BufNewFile"}, {
 		end
 	end,
 })
+
+-- automatically remove trailing whitespace on save file
+create_cmd({"BufWritePre"}, {
+	desc = "Remove trailing whitespace when saving",
+	group = create_group("cmd-remove-trailing-whitespace", { clear = true }),
+	pattern = "*",
+	callback = function(args)
+		vim.api.nvim_buf_call(args.buf, function()
+			vim.cmd([[%s/\s\+$//e]])
+		end)
+	end,
+})
+
+-- automatically set textwidth if not set otherwise
+create_cmd({"FileType"}, {
+	desc = "Automatically set textwidth",
+	pattern = "*",
+	callback = function(args)
+		local buf = args.buf
+		if vim.bo[buf].textwidth == 0 then
+			vim.bo[buf].textwidth = vim.g.ui.textwidth[vim.bo[buf].filetype] or vim.g.ui.textwidth.default
+		end
+	end,
+})